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patent

Parametric joint-coding of audio sources

Faller, Christof
2007

The following coding scenario is addressed: A number of audio source signals need to be transmitted or stored for the purpose of mixing wave field synthesis, multi channel surround, or stereo signals after decoding the source signals. The proposed technique offers significant coding gain when jointly coding the source signals, compared to separately coding them, even when no redundancy is present between the source signals. This is possible by considering statistical properties of the source signals, the properties of mixing techniques, and spatial hearing. The sum of the source signals is transmitted plus the statistical properties of the source signals which mostly determine the perceptually important spatial cues of the final mixed audio channels. Source signals are recovered at the receiver such that their statistical properties approximate the corresponding properties of the original source signals. Subjective evaluations indicate that high audio quality is achieved by the proposed scheme.

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Type
patent
EPO Family ID

34938725

Author(s)
Faller, Christof
Note

Alternative title(s) : (de) Parametrische verbundcodierung von audioquellen (fr) Codage paramétrique combiné de sources audio

TTO classification

TTO:6.0556

EPFL units
AVP-R-TTO  
DOICountry codeKind codeDate issued

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Available on Infoscience
June 13, 2017
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/138347
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